KSZ9021RNI vs KSZ9021RN Comparison
Detailed side-by-side comparison of KSZ9021RNI by Microchip Technology and KSZ9021RN by Microchip Technology. Compare key specifications, electrical parameters, packaging, lifecycle status, pricing, and availability to determine the best component for your design requirements.
Microchip Technology
KSZ9021RNI - Gigabit Ethernet PHY Transceiver, RGMII, QFN-48 | Microchip
KSZ9021RNI NrndSpecification Comparison
| Parameter | KSZ9021RNI | KSZ9021RN |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Interface ICs | Interface ICs |
| Lifecycle Status | NRND | Active |
| Function | Ethernet Physical Layer Transceiver (PHY) | — |
| Data Rate | 10/100/1000 Mbps (Triple Speed) | — |
| Number of Drivers/Receivers | 8/8 (4 differential pairs) | — |
| Protocol | 10Base-T, 100Base-TX, 1000Base-T (IEEE 802.3) | — |
| MAC Interface | RGMII, GMII, MII | — |
| Supply Voltage (VDDIO) | 3.135 V to 3.465 V (3.3 V typical) | — |
| Core Supply (Internal LDO) | 1.14 V to 1.26 V | — |
| Supply Current (typ., 1000Base-T) | [DATA_NEEDED: operating current] | — |
| Cable Type | CAT-5 UTP, 100 m | — |
| Auto-MDIX | Yes (HP Auto-MDIX) | — |
| Auto-Negotiation | Yes, per IEEE 802.3 clause 28 | Automatic selection of the highest supported link-up speed |
| Jumbo Frame Support | Yes | — |
| Operating Temperature | -40 C to +85 C (Industrial) | 0°C to +70°C |
| Package | 48-QFN (7x7 mm) with Exposed Pad | 48-pin QFN, 7 x 7 mm |
| Mounting Type | Surface Mount | Surface mount |
| MSL Level | 3 | — |
| RoHS Status | Compliant | RoHS compliant |
| Lifecycle | Not recommended for new designs (NRND) | — |
| Product Type | — | Single-chip Gigabit Ethernet transceiver with RGMII support |
| Supported Data Rates | — | 10/100/1000 Mbps |
| Ethernet Compliance | — | IEEE 802.3 |
| Host Interface | — | RGMII for the KSZ9021R configuration |
| Supply Voltage | — | 3.3 V |
| Interface I/O Tolerance | — | 3.3 V/2.5 V tolerant |
| Timing Control | — | Programmable transmit and receive delays |
| Cable Diagnostics | — | Micrel LinkMD TDR-based faulty-copper-cable identification |
| Test Features | — | Remote and local loopback for analog and digital path verification |
| Package Family | — | QFN surface-mount family |
| Lead-Free Status | — | Lead-free package |
| Exposed Thermal Pad | — | Available; connection details [DATA_NEEDED: exposed-pad dimensions and thermal design data] |
| Ethernet Magnetics | — | External network magnetics required; integrated magnetics [DATA_NEEDED: yes or no] |
| Internal Register Interface | — | Extended registers |
| Unit Price | — | $6.5948 at LCSC as of 2026-10-22 |